Pistorius, 26, later gunned down Steenkamp as she cowered in a bathroom, prosecutors allege.

The Olympian has maintained that he mistook her for a burglar.

Cecil Myers said Pistorius was trouble from Day One.

“He kept pestering her, phoning and phoning and phoning her. Oscar was hasty and impatient and very moody,” Myers said. “She told me he pushed her a bit into a corner.”

Meanwhile, Steenkamp’s parents, Barry and June, told the TV show “Carte Blanche” that they have been watching their daughter’s posthumous appearances on the reality-TV show “Tropika Island of Treasure” just so they could “see her laughing” once more.

Separately, Kenny Oldwage, an attorney for Pistorius’ older brother, Carl, confirmed his client has been charged with vehicular manslaughter stemming from a 2008 car crash with a female motorcyclist.

“Blood tests conducted by the police at the time proved that he had not been under the influence of alcohol, confirming that it was a tragic road accident after the deceased collided with Carl’s car,” he said.

Carl’s trial had been scheduled for last week, but has been postponed until next month.